Hi Daniel Thanks for your input. Yes, I’ve had the problem of partitions ending up the wrong size down the track.
I wanted a “temporary” backup storage area as several “spare” external drives have data relating to the 2009 iMac in its various stages of decline and recovery. I don’t want to delete them yet. I decided on the sparse image approach because SuperDuper erases the target disk as part of its process - and I didn’t want that going on near the boot drive. I decided that I could put several images in the one partition, which could be moved one at a time if space became an issue. However, I am now thinking that my security needs (fumble fingers, not web probes!) could be improved by putting the sparse images in the standard structure of a second (bold, italic and underline!) user account. The images only need accessing once a month in normal times. May keep them there, and not worry about external drives at all … Cheers Alan On 14 Dec 2014, at 7:22 pm, Daniel Kerr <[email protected]> wrote: > You can create one partition on a Fusion drive, after that ,…no. > More info here. - http://support.apple.com/en-au/HT202574 > My personal opinion on partitions on internal drives,…and again I point > out,..this is my personal opinion, I think partitions are a waste of time. > You're not gaining any benefit with a partition, and nine times out of ten, > down the track either Part A or Part B of the partition is the "wrong size". > Then you have to go back to square one. > Generally just easier to a) get another external drive as a backup (as > externals are cheap), as you'll spend less "money time" on it and can get > larger sizes,…or just create a backup folder to back up to. > There's no real "benefit" in partitioning I find…not these days. It's not > like if one partition dies it's not going to affect the other partition, as > it's the same drive……. > > Again, just my take on it,….. > > Kind regards > Daniel > > Sent from my iPhone 6 > > --- > Daniel Kerr > MacWizardry > > Phone: 0414 795 960 > Email: <daniel AT macwizardry.com.au> > Web: <http://www.macwizardry.com.au> > > > **For everything Apple** > > NOTE: Any information provided in this email may be my personal opinion and > as such should be taken accordingly, and may not be the views of MacWizardry. > Any information provided does not offer or warrant any form of warranty or > accept liability. It would be appreciated that if any information in this > email is to be disseminated, distributed or copied, that permission by the > author be requested. > > On 13/12/2014, at 1:04 PM, Alan Smith <[email protected]> wrote: > >> I would like to utilise some of the vast unused space on the internal drives >> of two iMacs as backups for films. Is this possible? If it is possible >> then what is the downside? Could such a partition be later removed to >> restore the space to OS X? I do not want to go through the disk-erase and >> OS X re-install operation! >> >> My concept is to use SuperDuper to create a sparse image (which permits >> smart updates) of some of the films on a USB 3 external drive. In >> practice I would use say three sparse images for ease of management. >> >> iMac 1 (2012) has 1TB with Fusion Drive. iMac 2 (2009) has a standard 1TB >> drive. I would prefer to use the Fusion Drive iMac for the backups. Both >> iMacs have Mavericks installed, and hence should also have Recovery >> partitions. (If an OS X upgrade or Boot Camp can install partitions, why >> not me??) >> >> I have assumed a partition would be needed, but can a sparse image simply be >> used as a file within the ‘Macintosh HD’ OS X startup volume structure? >> >> >> Regards, >> Alan >> >> Alan Smith >> Late 2012 iMac 27" Intel Quad Core i5 Fusion 3.2GHz 8G RAM - OSX 10.9.5 >> Mavericks >> Late 2009 iMac 21.5" Intel Core 2 Duo 3.06GHz 12G RAM - OSX 10.9.5 Mavericks >> iPhone5; iPad2; ATV2 >> >> >> >> >> >> >> >> >> -- The WA Macintosh User Group Mailing List -- >> Archives - <http://www.wamug.org.au/mailinglist/archives.shtml> >> Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml> >> Settings & Unsubscribe - >> <http://lists.wamug.org.au/listinfo/wamug.org.au-wamug> > > -- The WA Macintosh User Group Mailing List -- > Archives - <http://www.wamug.org.au/mailinglist/archives.shtml> > Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml> > Settings & Unsubscribe - > <http://lists.wamug.org.au/listinfo/wamug.org.au-wamug> -- The WA Macintosh User Group Mailing List -- Archives - <http://www.wamug.org.au/mailinglist/archives.shtml> Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml> Settings & Unsubscribe - <http://lists.wamug.org.au/listinfo/wamug.org.au-wamug>

